This tool calculates for each grid cell of the selected grid system the area that is covered by the input polygons layer. 
|  | Name | Type | Identifier | Description | Constraints | 
|---|
| Input | Polygons | shapes, input | POLYGONS | - | - | 
| Target System | grid, input, optional | TARGET_TEMPLATE | use this grid's system for output grids | - | 
| Output | Area of Coverage | grid, output | AREA | - | - | 
| Options | Method | choice | METHOD | Choose cell wise, if you have not many polygons. Polygon wise will show much better performance, if you have many (small) polygons. | Available Choices:
[0] cell wise
[1] polygon wise
Default: 1 | 
| Output | choice | OUTPUT | - | Available Choices:
[0] area
[1] percentage
Default: 1 | 
| Only Selected Polygons | boolean | SELECTION | - | Default: 1 | 
| Target Grid System | choice | TARGET_DEFINITION | - | Available Choices:
[0] user defined
[1] grid or grid system
Default: 0 | 
| Cellsize | floating point number | TARGET_USER_SIZE | - | Minimum: 0.000000
Default: 1.000000 | 
| West | floating point number | TARGET_USER_XMIN | - | Default: 0.000000 | 
| East | floating point number | TARGET_USER_XMAX | - | Default: 100.000000 | 
| South | floating point number | TARGET_USER_YMIN | - | Default: 0.000000 | 
| North | floating point number | TARGET_USER_YMAX | - | Default: 100.000000 | 
| Columns | integer number | TARGET_USER_COLS | Number of cells in East-West direction. | Minimum: 1
Default: 101 | 
| Rows | integer number | TARGET_USER_ROWS | Number of cells in North-South direction. | Minimum: 1
Default: 101 | 
| Fit | choice | TARGET_USER_FITS | - | Available Choices:
[0] nodes
[1] cells
Default: 0 | 
| Grid System | grid system | TARGET_SYSTEM | - | - |